octagonoctagon /ˈɑktəˌgɑn/ noun [countable] 
math, geometry a flat shape with eight sides—octagonal /ɑkˈtægənl/ adjective: an octagonal room
math, geometry a flat shape with eight sides—octagonal /ɑkˈtægənl/ adjective: an octagonal room- comparably
- comparative
- comparative advantage
- comparative literature
- comparatively
- compare
- comparison
- comparison and contrast
- comparison-shop
- comparison shopping
- compartment
- compartmentalization
- compartmentalize
- compartmentalized
- compass
- compassion
- compassionate
- compassionate leave
- compassionately
- compass rose
- compatibility
- compatible
- compatible number
- compatriot
- compel